NO. 2044. NEW PHILIPPINE CRABS— RATHBUN. 85 



angles of the orbit; sides of front converging downward, lower margin 

 rounded; surface concave; orbits with a dorsal inclination, upper 

 margin sinuous; tooth at outer angle obliquely truncate externally, 

 separated by a long, rounded sinus from the second tooth, which is 

 small, obtuse and laminar, continuous with the postero-lateral 

 margin; a raised line above and subparallel to the posterior margin. 



On outer half of merus of maxilUped there is a groove subparallel 

 to the outer margin. Chelipeds twice as long as carapace, granulate; 

 wrist without tooth at inner angle; hands as high as their length at 

 the middle, a little longer than the fingers measured horizontally; 

 lower margin of propodus strongly sinuous, the manus convex below, 

 the finger bent downward; upper margin of dactylus finely serrulate, 

 a low tooth on the basal half of the prehensile edge; no tooth nor 

 sinus on the prehensile edge of the immovable finger; that edge in 

 both fingers denticulate. Legs long and narrow, sparingly hairy; 

 merus joints dilated, without tympana, dactyli nearly as long as 

 propodi. 



First two segments of abdomen very short; third longer than first 

 and second together, sides rounded; fourth not quite so long nor 

 wide as third, its distal edge trilobate; fifth segment about as long as 

 its distal width, constricted at base, sides sinuous; sixth segment 

 broader than long, sides sinuous, forming a small tooth at proximal 

 end. 



The species in general appearance resembles T. stapletoni de Man,^ 

 which has transverse orbits, horizontal immovable fingers, almost 

 smooth palms, and stout legs. 



T. pusillus (de Haan)^ has a more pentagonal carapace than the 

 new species, the orbits and also the lateral margins being more 

 oblique; the granules on the palm are reticulated, the immovable 

 finger is horizontal, and both fingers have a strong ridge through the 

 middle of the outer surface; the merus joints of the legs are provided 

 with tympana. 



In T. orientalis (de Man)^ the surface of carapace and hand is 

 smooth, the carapace widens posteriorly, the cheliped and especially 

 the carpus is elongate. 



In T. ceratophora (Koelbel),* the eyes talk bears a long stjdet which 

 projects beyond the cornea, the cheUpeds are elongate, the immovable 

 finger has a strong tooth on its prehensile edge. 



» Eec. Indian Mus., vol. 2, 1908, p. 212, pi. 18, fig. 1. 



* Ocypode ( Ckislostoma) pusilla de Haan, Fauna Japon., Crust., 1835, p. 56, pi. 16, fig. 1. 



^Dioiippe orienlalis de Man, Joum. Linn. Soc. London, Zool., vol. 22, 1888, p. 138, pi. 9, figs. 8-10. 



*Dioxippe ceratophora Kalbel, in Count Sz&henyi's Keletarzslai utjanak tudomanyos Eredmenye, 

 Budapesth, 1896, p. 714, pi. 1, figs. 8-12. (Titlecopied from Zool. Ree. 1899). For German translation, see 

 Wissenschaftlicho Ergebnisse der Reise des Grafen B61aSz&henyi in Ostasien 1877-1880, vol. 2, Wien, 

 1898, p. 573, pi. 1, figs. 8-12. 



